Tools
From practical utilities to creative play
Built from a design studio’s perspective, these free browser-based tools cover everything from image editing and color exploration to business documents and just-for-fun experiments. They work right in your browser on any device — no downloads, no sign-ups. Please review the terms of use before incorporating them into your workflow.
Color & Palette
Color Code Converter：Instantly convert between HEX, RGB, and HSV color codes.
Contrast Ratio Checker (WCAG)：Check text and background contrast ratios against WCAG 2.1/2.2 standards.
Color Vision Simulator：See how your designs look through different types of color vision.
Camera Color Vision Simulator：Real-time color vision simulation using your device camera.
Gradient Suggestion Tool：Discover beautiful gradient combinations for your projects.
BLND — Color Palette Generator：Blend and mix colors like liquid to create unique palettes.
Mood Palette：Generate color palettes based on your current mood.
Color Pattern Generator：Create complementary, triadic, and other harmonious color schemes.
Palette Sync：Extract a color palette from any image.
Image Processing
Batch Image Resizer：Resize multiple images at once. Drag, drop, done.
Image Compressor：Reduce file sizes without losing visible quality.
WebP Converter：Convert JPEG/PNG images to the modern WebP format.
PNG to JPEG Converter：Batch convert PNG files to JPEG with adjustable quality.
Re:SIZER — Crop & Resize：Precisely crop and resize a single image with visual controls.
Image Squarer：Add padding to make any image perfectly square — ideal for social media.
Border & Rounded Corners：Add borders, rounded corners, and padding to your images.
IMG FRAMER — Photo Frame Generator：Apply stylish frames to your photos in one click.
Image Joiner：Stitch multiple images together horizontally or vertically.
Image Masking Tool：Mask an image using another PNG shape for creative cutouts.
Batch Icon Generator：Generate app icons in all required sizes from a single image.
Watermark Tool：Add text or logo watermarks to your images in bulk.
Image Diff Checker：Spot the differences between two images instantly.
Aspect Ratio Checker：Check and calculate image aspect ratios with ease.
Image Effects & Filters
POP IMG MAKER — Pop Art Generator：Transform your photos into pop art and comic-style images.
Glitch Effect Maker：Apply glitch, distortion, and data corruption effects to images.
IMG Breaker — Image Corruption Effects：Create dramatic image breaking and data-bending visuals.
ANIME-WHO — Anime Background Art Filter：Turn photos into anime movie-style background art.
MANGA-WHO — Manga Style Converter：Convert photos into manga-style black-and-white illustrations.
Pixel Art Converter：Transform any image into retro pixel art.
Pixel Art Converter v2：Enhanced pixel art conversion with more controls and styles.
PIXEL DRIPPER — Pixel Art Editor：A full-featured pixel art drawing and editing tool.
DOTTORIE — Online Pixel Art Editor：Feature-rich pixel art editor with shape tools, image tracing, and SVG export.
Collage Studio：Create photo collages with flexible grid layouts.
VA覇 — Retro / Vaporwave Image Filter：Apply vaporwave, scan line, and retro CRT effects to images.
FKGR — Image-to-Video Converter：Convert still images to pseudo-video format to protect against AI scraping.
HALFTONE MAKER — Halftone Effect Tool：Create comic-style or newspaper-print halftone dot effects from any image.
2C PRINT MAKER — Risograph-Style Generator：Recreate the unique ink mixing and misalignment of risograph printing.
V.I.S.O.R. — Night Vision & Thermal Filter：Transform images with night vision, thermography, and infrared sensor effects.
GABIBI — Image Degradation Tool：Intentionally reduce image quality for retro and lo-fi aesthetics.
DOU-GABIBI — Video Degradation Tool：Apply lo-fi, VHS-style degradation effects to video files.
Image Splitting
BUN≡KATSU — Image Splitter：Split a single image into grids for Instagram, X, and more.
BUN≡KATSU SNS Edition：Image splitter optimized for X (Twitter) multi-image posts.
A3 to A4 PDF Splitter：Split A3-size PDFs into two A4 pages for standard printing.
PDF Tools
Image to PDF：Combine multiple images into a single PDF document.
PDF Splitter：Split a multi-page PDF into individual files.
PDF to Image Converter：Convert PDF pages to high-quality JPEG or PNG images.
PDF Crop Tool：Visually crop and trim PDF pages.
PDF Margin Adjuster：Add or remove margins from PDF documents.
PDF Page Extractor：Pick and extract specific pages from a PDF file.
Design & UI
Button Generator：Design custom web buttons and copy the CSS/HTML code.
Heading Design Generator：Browse and customize stylish CSS heading designs.
CSS Loading Animations：A curated library of copy-paste CSS loading spinners and animations.
Brand Guideline Maker：Create a simple logo and brand guideline sheet for your projects.
Logo Design Tester：Verify the visual balance and strength of your logo with mirror, blur, and pattern tests.
Design Timer：A visual countdown timer built for design sprints and presentations.
TV Caption Maker：Create TV variety show-style text overlays and caption graphics.
Design Tool Diagnosis：Find out which design tool fits you best — Canva, Figma, or Adobe.
Audio & Sound
KUPEPO — Voice Changer：Transform your voice with fun presets — robot, demon, helium, and more.
KUPEPO 2nd — Modular Voice Changer：Chain voice effects in any order for custom sound design.
Sound Looper：Find and create seamless audio loops from any sound file.
Sound Normalizer：Normalize audio levels and optimize loudness for consistent playback.
EGANE — Image-to-Music Generator：Generate unique music from image colors and patterns.
PIGAGA — Audio Degradation Tool：Apply lo-fi, cassette, and retro audio effects to sound files.
Smartphone Penlight：Turn your phone into a concert-ready penlight with BPM sync.
Rakuno’Oto — Ambient Sound Mixer：Mix rain, brown noise, white noise, streams, campfire, ocean waves, and 30+ ambient sounds to create your perfect focus or sleep soundscape. Features spatial audio, breathing exercises, and optional premium sound packs.
OTOGRAM — Generative Healing Sound & Relaxation Ambient Music：OTOGRAM is a generative healing soundscape that runs in your browser. Real-time ambient sound generation ideal for relaxation, meditation, focus, and sleep. Features a beautiful GPU particle visualizer.
QR Code Generators
QR Code Generator：Generate QR codes from text or URLs — simple and fast.
Custom QR Code Generator：Create QR codes with custom colors and embedded logos.
Minimal QR Code Generator：Clean, minimal-style QR codes with a refined look.
Tough QR Code Generator：High error-correction QR codes that stay readable even when damaged.
QR Way — Directional QR Code：QR codes with built-in directional design for wayfinding.
“QR Code” is a registered trademark of DENSO WAVE INCORPORATED.
Utility & Productivity
Password Generator：Generate strong, secure passwords in bulk with customizable rules.
Batch File Renamer：Rename multiple files at once with numbering, prefixes, and find-replace.
File Name List Extractor：Extract and copy a list of file names from any folder.
Ad Performance Calculator：Calculate ROAS, ROI, and CPA for your advertising campaigns.
Business Trip & Itinerary Generator：A free browser tool to plan business trips and travel itineraries visually.
Print & Simulation
Print & Surface Finish Simulator：Preview how your printed materials will look with 3D lamination and paper texture simulation.
Paper Size Simulator：Compare A-series and B-series paper sizes at actual scale with familiar references.
3D Trifold Brochure Simulator：Upload your design to preview trifold brochure fold order and cover position in 3D.
3D Large Format Trifold Simulator：Preview A4-finish large format trifold brochures (630x297mm) with C-fold and Z-fold options.
3D Bifold Brochure Simulator：Preview A4-finish bifold brochures (A3 spread) with real-time fold and cover position checks.
Symbol & Character Libraries
Arrow Symbols：Browse and copy arrow symbols for any project.
Astrology Symbols：Zodiac signs, planets, and astrological symbols ready to copy.
Circled Letters & Numbers：Circled, parenthesized, and enclosed alphanumeric characters.
Game & Hobby Symbols：Playing cards, dice, chess, mahjong, and other game symbols.
Line & Border Symbols：Decorative lines, box-drawing characters, and border elements.
Shape Symbols：Geometric shapes, stars, hearts, and decorative marks.
Games & Entertainment
Draw Shooter：Draw your own ship and fight in this creative bullet-hell game.
Wire Shooter：A neon wireframe shooting game with minimalist aesthetics.
MajeMaje — Color Training Game：Test and sharpen your RGB color perception skills.
Hacking Screen Simulator：Cinematic hacking visuals for video production and events.
Ops Screen Simulator：Command center and mission control displays for creative projects.
The Abyss — Interactive Deep Sea Art：Dive into the deep ocean and discover bioluminescent creatures.
World Ad Law Quiz：Test your knowledge of advertising regulations around the globe.
Fish Kanji Quiz：Can you read these Japanese kanji for fish? A fun challenge.
Logo Trivia Quiz：How well do you know the world’s most famous logos?
Name to Kanji Converter：Transform your name into cool Japanese Kanji characters — perfect for gaming profiles and social media.
Triangle Relationship Generator：A free browser tool for drawing love triangles, character relationship charts, and friendship diagrams.
CARD COMBO — Free TCG Combo Mapper：CARD COMBO is a free browser tool for mapping combo lines across any TCG.
About AMIX Design Studio
AMIX is a design studio guided by a simple idea: make design more accessible. We handle a wide range of creative work — advertising, graphic design, video editing, packaging, and promotional support — helping businesses communicate visually.
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【Licenses】The licenses for fonts and libraries used across these tools are listed here.